乳粉包裝自動稱重系統(tǒng)的設(shè)計

目   錄
1  引言 1
2  國內(nèi)電子稱重的現(xiàn)狀 1
3  電子稱重技術(shù)發(fā)展的趨勢 2
3.1 稱重傳感器 2
3.2 稱重儀表 2
3.3 承載器 3
4  乳粉包裝稱重的工藝流程 3
5  系統(tǒng)方案的設(shè)計 3
5.1 系統(tǒng)的硬件構(gòu)成 3
5.1.1系統(tǒng)的技術(shù)要求和傳感器選擇 4
5.1.2測量放大器及求和器 5
5.1.3A/D轉(zhuǎn)換芯片的選擇 6
5.1.4存儲器的擴展 7
5.1.5鍵盤及顯示接口擴展 7
5.1.6輸出接口擴展 9
5.1.7系統(tǒng)的電源電路介紹 9
5.2系統(tǒng)軟件設(shè)置 11
5.2.1乳粉包裝稱重對象的數(shù)學(xué)模型分析 11
5.2.2系統(tǒng)補償?shù)脑砗头桨?nbsp;12
5.2.3系統(tǒng)軟件設(shè)計原則 12
5.2.4存儲區(qū)分配及程序流程圖 12
6  抗干擾技術(shù)及措施 15
6.1硬件抗干擾的設(shè)計 15
6.2電源的干擾以及抑制措施 16
6.3空間干擾的防御措施 16
7 結(jié)束語 16
8  致謝 16
參考文獻： 16
ABSTRACT 17
 
乳粉包裝稱重系統(tǒng)的設(shè)計
摘要：論文分析了國內(nèi)外稱重技術(shù)發(fā)展的基礎(chǔ)上，主要討論了一個用于工業(yè)控制且功能較齊全的自動稱重系統(tǒng)的開發(fā)。隨著自動化和管理現(xiàn)代化的進展，自動在線稱重,快速動態(tài)稱重和稱重系統(tǒng)中有了很大的發(fā)展，進一步采用新技術(shù)，開發(fā)各種自動稱重系統(tǒng),提高稱重的準確度。
論文所介紹的自動稱重系統(tǒng)是應(yīng)用于工業(yè)上的乳粉包裝自動稱重中的，它的實現(xiàn)有兩個過程，第一階段由異步電機帶動粗螺旋推進器給料，這一階段可看成為粗調(diào)過程，給料重量一定要小于額定重量。第二階段由步進電機帶動細螺旋推進器進料，可看成是細調(diào)過程，使實際重量等于要求的額定重量。本系統(tǒng)應(yīng)用了傳感器，各種芯片及單片機。工業(yè)性能強，便于應(yīng)用與工業(yè)上。
關(guān)鍵詞:自動稱重系統(tǒng)  粗調(diào)  細調(diào)

Abstract: This paper on the basis of weighing technology development at home and abroad, focuses on the development of automatic weighing systems for industrial control function is complete. With the progress of the automation and management modernization, the automatic weighing line, fast dynamic weighing and weighing system has been greatly developed, further adoption of new technologies, develop a variety of automatic weighing systems, improve the accuracy of weighing.
Paper introduces automatic weighing system is applied to the automatic weighing of the milk powder packaging industry, it is the realization of the two processes, the first phase induction motor driven coarse screw propeller feed at this stage to be seen coarse adjustment process, the weight of the feed must be less than the rated weight. The second stage of fine spiral driven by a stepping motor propulsion feed can be regarded as fine-tune the process, the actual weight is equal to the required weight rating. The system application sensors, a variety of chips and microcontroller. Industrial performance, ease of application and industry.
Keywords: automatic weighing system coarse fine-tune